%0 Journal Article %A Suhyoung Choi %A Hyunkoo Lee %T Geometric structures on manifolds and holonomy-invariant metrics. %J Forum mathematicum %D 1997 %P 247-256 %V 9 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/FORUM_1997__9_2_141801/ %F FORUM_1997__9_2_141801